Messier 5
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Globular cluster Messier 5 / NGC 5904 |
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| SDSS , field of view 24 '× 24' | |
| AladinLite | |
| Constellation | Snake |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 15 h 18 m 33.7 s |
| declination | + 02 ° 04 ′ 58 ″ |
| Appearance | |
| Concentration class | V |
| Brightness (visual) | 5.7 likes |
| Angular expansion | 23 ′ |
| Physical data | |
| Redshift | +0.000173 ± 0.000002 |
| Radial velocity | (+51.8 ± 0.5) km / s |
| distance | 24.5 kLj |
| diameter | 165 ly |
| history | |
| discovery | G. and M. Kirch |
| Discovery date | May 5, 1702 |
| Catalog names | |
| M 5 • NGC 5904 • C 1516 + 022 • GCl 34 • | |
Messier 5 or NGC 5904 is a globular cluster in the constellation Snake and about 25,000 light years from the solar system. For amateur telescopes, it is one of the most beautiful globular clusters.
With an apparent brightness of 5.6 mag, Messier 5 can be recognized with the naked eye as a star-like object on a very clear night and in a location with little light pollution . In small telescopes, single stars are already visible at the edge, but the center looks a bit blurry even in the larger telescope because unresolved stars create a kind of shimmer. Several thousand of these faint stars can be seen in the picture below.
The globular cluster was discovered by Gottfried and Maria Kirch on May 5, 1702 and added to his Messier catalog by Charles Messier on May 23, 1764.
Web links
- Spektrum.de : Amateur recordings [1]
Individual evidence
- ↑ NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ Harlow Shapley, Helen B. Sawyer: A Classification of Globular Clusters . In: Harvard College Observatory Bulletin . tape 849 , 1927, pp. 11-14 , bibcode : 1927BHarO.849 ... 11S .
- ↑ SEDS : NGC 5904
- ↑ Messier 5 at SEDS
- ↑ Bernd Koch, Stefan Korth The Messier Objects. The 110 classic destinations for sky watchers. Kosmos-Verlag Stuttgart 2010
- ↑ Seligman
